When attempting to ping an IP address, given the following error "Destination Host Unreachable"

Last Modified

Mon May 07 15:33 GMT 2018

Description

  • When attempting to ping an IP address, given the following error "Destination Host Unreachable"
  • Attempting to ping a device under the same subnet produces the error "Destination Host Unreah"

Environment

  • N-able N-central

Solution

  • There are four main reasons why "Destination Host Unreachable" occurs:
    1. The ping packet find the destination network but failed to find the destination host
    2. Packet Routing issue on Remote gateway
    3. Destination host might be down
    4. Connection issues
  • Please do the following to resolve this:
    1. Make sure that local host is configured correctly
    2. Make sure Destination Computer/Device is up
    3. Disable the Firewall and check for the issue
    4. Perform a tracert to the destination IP and check where the problem lies
  • For more information on this, please go here
  • NOTE: When you ping to a host in the same subnet, your computer sends an ARP request for the MAC address of the destination device
  • If the host does not exit, you will get the "Destination Host Unreachable" message
  • This is because without completing ARP request, ICMP echo cannot be sent